Ask HN: Debit Card Users for Research for PhD

Hi, I'm doing some research for a PhD in marketing and was looking to interview some people that primarily use debit cards to make payments and are US citizens. If you fit the bill and would be willing to put aside no more than 1 hour and 15 minutes for a phone interview, it would be greatly appreciated. Feel free to email me at arvind.agrawal@huskers.unl.edu if you're up for it! Thank you so much!